Yokogawa 415 Steam and Gas - Manual (Page 64)

6. INPUT CIRCUITS
The Model 415 has a regulated output which can be used to power sensors. A
trimpot on the rear of the instrument allows the voltage to be adjusted in the
range of 8-24 Volts and the output can supply a maximum of 50mA.
6.1 FREQUENCY FLOW INPUT
The Model 415 has an input conditioning card which will accept signals from
most pulse or frequency producing flowmeters. An 8 position DIL switch on the
rear panel enables the input circuit to be configured for different signal types:
The input will interface directly to:
- Turbine Flowmeters
- Open Collector Outputs
- Reed Switches
- Logic Signals
- Two Wire Proximity Switches.
The following pages give examples of interconnections to various signal outputs,
and a circuit diagram of the input is also provided.
62 Input Circuits